At CanvasCon in Los Angeles there was mention of possibly adding a way to import questions into Canvas without Respondus or QTI for Quizzes.Next.
Something similar to Aiken for Moodle or possibly a .csv file is what I heard. Is there any progress on this feature of Quizzes.Next so that instructors can create their own questions banks with some reformatting and without using an external tool?
Just so you have an update to your question, are you looking for something like https://community.canvaslms.com/ideas/2086-create-item-banks-from-msword" modifiedtitle="true" title...?
Our teams are working on an improved roadmap for New Quizzes, and I'd recommend checking out the Ideas space to see if there are any ideas that specifically relate to what you're looking for and follow them so you can get updates when available.